EF

Hello, you have come here looking for the meaning of the word EF. In DICTIOUS you will not only get to know all the dictionary meanings for the word EF, but we will also tell you about its etymology, its characteristics and you will know how to say EF in singular and plural. Everything you need to know about the word EF you have here. The definition of the word EF will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofEF, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
See also: ef, ef-, and -ef

Translingual

Symbol

EF

  1. (metrology) Symbol for exafarad, an SI unit of electrical capacitance equal to 1018 farads.
  2. (climatology) Köppen climate classification for an ice cap climate.
  3. (international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the Union of Countries under the European Community Patent Convention.

Usage notes

English

Noun

EF (plural EFs)

  1. (medicine, cardiology) Initialism of ejection fraction.
  2. (electricity) Initialism of electric field.
    • 2024 August 19, “LAKETOWN 115-kV TRANSMISSION LINE PROJECT IN CARVER COUNTY, MN”, in Great River Energy, pages 55, 74:
      Under certain conditions, the localized EF near an energized transmission line conductor can produce small electric discharges, ionizing nearby air. Modern “bipolar” cardiac devices are much less susceptible to interactions with EFs. Manufacturers of pacemakers and other IMDs have indicated that EFs below 6 kV/m are unlikely to cause interactions affecting the operation of most of their devices.

Proper noun

EF

  1. (computing, Microsoft) Initialism of Entity Framework, an open-source ORM framework.
  2. (Canada, US, meteorology) Followed by a number from 0 to 5: initialism of Enhanced Fujita, a rating on the Enhanced Fujita scale used to indicate the intensity of a tornado; it has superseded the Fujita scale.
  3. (Roman Catholicism) Initialism of Extraordinary Form.

Adjective

EF (not comparable)

  1. (philately) Initialism of extremely fine or extra fine; also XF.

Anagrams

German

Pronunciation

Noun

EF m (strong, genitive EFs or EF, plural (formal) EF or (colloquial) EFs)

  1. (historical, military) one-year volunteer (abbreviation of Einjährig-Freiwilliger)

Usage notes

  • The plural often takes no ending in formal standard German. In less formal speech, however, -s is only rarely omitted.

Derived terms